2001 Edition Yamaha F225A and LF225A Outboards Service Manual, Page 111Get this manual

2001 Edition Yamaha F225A and LF225A Outboards Service Manual, Page 111

Quality of the image is intentionally reduced!

Power unit Checking the compression pressure
Before removing the spark plugs, blow compressed air in the spark plug well to clear out any dirt or dust that may fall into the cylinderCompression